Data / Federal rules / 2024-30404

Air Plan Approval; Delaware; 2022 Amendments to Delaware's Ambient Air Quality Standards

The Environmental Protection Agency published this final rule in the Federal Register on December 23, 2024. It took effect on January 22, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the State of Delaware. This SIP revision consists of Delaware's amendments to its ambient air quality standards for ground level ozone, amendments to citations to the Code of Federal Regulation (CFR) dates for the EPA sampling and analytical procedures and techniques for all ambient air quality standards in Delaware's regulations, and Delaware's amendment removing the sulfur dioxide (SO<INF>2</INF>) 24-hour and annual primary standards that have been revoked by EPA. This action is being taken under the Clean Air Act (CAA).

Key facts

Document number: 2024-30404
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: December 23, 2024
Takes effect: January 22, 2025
Dates: This final rule is effective on January 22, 2025.
Docket: EPA-R03-OAR-2023-0444; FRL-10461-02-R3
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Nitrogen dioxide; Ozone; Reporting and recordkeeping requirements; Sulfur oxides; Volatile organic compounds
Pages: 3

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on environmental protection · Rules on incorporation by reference · Published in December 2024

Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.